From: Dmitry <dbaryshkov@gmail.com>
To: "Ben Dooks" <ben-linux@fluff.org>
Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.arm.linux.org.uk
Subject: Re: [patch 3/4] MFD: Remove unnecessary fields if mfd_cell structure.
Date: Wed, 9 Jul 2008 15:44:30 +0400 [thread overview]
Message-ID: <bc64b4640807090444m220129d9y50d3cdcfbbdb8bf8@mail.gmail.com> (raw)
In-Reply-To: <20080709113818.GJ8517@trinity.fluff.org>
2008/7/9 Ben Dooks <ben-linux@fluff.org>:
> On Wed, Jul 09, 2008 at 03:16:47PM +0400, Dmitry wrote:
>> 2008/7/9 Ben Dooks <ben-linux@fluff.org>:
>> > On Wed, Jul 09, 2008 at 03:09:12PM +0400, Dmitry wrote:
>> >> 2008/7/9 Ben Dooks <ben-linux@fluff.org>:
>> >> > The enable,disable,suspend and resume entry in the struct mfd_cell
>> >> > do not seem to be necessary as they should be handled by the
>> >> > platform driver that the device created has bound to.
>> >>
>> >> NAK. It's used e.g. by the tmio-nand driver. These fields provide easy
>> >> way to support
>> >> enhanced power management, etc.
>> >
>> > What enhancements over the standard platform device model do you need?
>>
>> As an example of what we need, please check the tmio-nand driver.
>
> As posted below, the driver on the linux-mtd list does not use this,
> and further more in [1] the method of getting to the the mfd_cell from
> a given platform_device has gone which would be used by [2] if it
> actually touched the mfd_cell information.
It is used. Go, search for mfd_get_cell.
And yes, it will require a minor change as discussed in the mfd thread
yesterday.
>
> [1] http://lists.arm.linux.org.uk/lurker/message/20080708.153450.bb33046d.en.html
> [2] http://lists.infradead.org/pipermail/linux-mtd/2008-June/022137.html
>
>> >
>> >> >
>> >> > Signed-off-by: Ben Dooks <ben-linux@fluff.org>
>> >> >
>> >> > Index: linux-2.6.26-rc9-next20080709/include/linux/mfd/core.h
>> >> > ===================================================================
>> >> > --- linux-2.6.26-rc9-next20080709.orig/include/linux/mfd/core.h 2008-07-09 10:44:45.000000000 +0100
>> >> > +++ linux-2.6.26-rc9-next20080709/include/linux/mfd/core.h 2008-07-09 10:45:06.000000000 +0100
>> >> > @@ -23,12 +26,6 @@
>> >> > */
>> >> > struct mfd_cell {
>> >> > const char *name;
>> >> > -
>> >> > - int (*enable)(struct platform_device *dev);
>> >> > - int (*disable)(struct platform_device *dev);
>> >> > - int (*suspend)(struct platform_device *dev);
>> >> > - int (*resume)(struct platform_device *dev);
>> >> > -
>> >> > void *driver_data; /* driver-specific data */
>> >> >
>> >> > /*
>> >> >
>> >> > --
>> >> >
>> >>
>> >>
>> >>
>> >> --
>> >> With best wishes
>> >> Dmitry
>> >
>> > --
>> > --
>> > Ben
>> >
>> > Q: What's a light-year?
>> > A: One-third less calories than a regular year.
>> >
>> >
>>
>>
>>
>> --
>> With best wishes
>> Dmitry
>>
>> -------------------------------------------------------------------
>> List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm-kernel
>> FAQ: http://www.arm.linux.org.uk/mailinglists/faq.php
>> Etiquette: http://www.arm.linux.org.uk/mailinglists/etiquette.php
>
> --
> --
> Ben
>
> Q: What's a light-year?
> A: One-third less calories than a regular year.
>
>
--
With best wishes
Dmitry
next prev parent reply other threads:[~2008-07-09 11:44 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-09 10:49 [patch 0/4] mfd updates and proposed changes Ben Dooks
2008-07-09 10:49 ` [patch 1/4] MFD: Use to_platform_device instead of container_of Ben Dooks
2008-07-09 11:10 ` Dmitry
2008-07-10 14:47 ` Samuel Ortiz
2008-07-29 0:06 ` Samuel Ortiz
2008-07-09 10:49 ` [patch 2/4] MFD: Coding style fixes Ben Dooks
2008-07-09 11:11 ` Dmitry
2008-07-09 11:12 ` Ben Dooks
2008-07-10 14:48 ` Samuel Ortiz
2008-07-09 11:46 ` ian
2008-07-29 0:07 ` Samuel Ortiz
2008-07-09 10:49 ` [patch 3/4] MFD: Remove unnecessary fields if mfd_cell structure Ben Dooks
2008-07-09 11:09 ` Dmitry
2008-07-09 11:12 ` Ben Dooks
2008-07-09 11:16 ` Dmitry
2008-07-09 11:38 ` Ben Dooks
2008-07-09 11:44 ` Dmitry [this message]
2008-07-09 10:49 ` [patch 4/4] MFD: Change mfd platform device usage to wrapper platform_device Ben Dooks
2008-07-09 11:15 ` Dmitry
2008-07-09 11:24 ` Ben Dooks
2008-07-09 11:31 ` Dmitry
2008-07-09 11:50 ` Ben Dooks
2008-07-09 11:56 ` Dmitry
2008-07-09 12:07 ` Ben Dooks
2008-07-09 12:31 ` Dmitry
2008-07-09 13:28 ` ian
2008-07-09 13:34 ` pHilipp Zabel
2008-07-09 13:37 ` ian
2008-07-11 21:37 ` Samuel Ortiz
2008-07-09 12:13 ` ian
2008-07-09 12:29 ` pHilipp Zabel
2008-07-09 11:45 ` ian
2008-07-09 11:52 ` Dmitry
2008-07-09 21:03 ` Russell King - ARM Linux
2008-07-09 21:13 ` Dmitry Baryshkov
2008-07-09 21:13 ` ian
2008-07-11 21:41 ` Samuel Ortiz
2008-07-09 20:56 ` Russell King - ARM Linux
2008-07-09 21:04 ` Ben Dooks
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